# CVE-2024-23829: python-aiohttp: aiohttp is an asynchronous HTTP client/server framework for asyncio and Python

CVE-2024-23829 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2024-23829, released January 29, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-23829
- Priority: Routine
- CVSS: 6.5 (medium)
- EPSS: 0.0103
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 29, 2024

## Description

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Security-sensitive parts of the Python HTTP parser retained minor differences in allowable character sets, that must trigger error handling to robustly match frame boundaries of proxies in order to protect against injection of additional requests. Additionally, validation could trigger exceptions that were not handled consistently with processing of other malformed input.  Being more lenient than internet standards require could, depending on deployment environment, assist in request smuggling. The unhandled exception could cause excessive resource consumption on the application server and/or its logging facilities. This vulnerability exists due to an incomplete fix for CVE-2023-47627. Version 3.9.2 fixes this vulnerability.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-aiohttp Debian 13.5 (trixie) | 3.9.5-1 | [DEBIAN-CVE-2024-23829](https://patchblox.com/security/data/fix/linux/debian-cve-2024-23829.md) | Jan 29, 2024 |
| Linux | python-aiohttp Debian 14 | 3.9.5-1 | [DEBIAN-CVE-2024-23829](https://patchblox.com/security/data/fix/linux/debian-cve-2024-23829.md) | Jan 29, 2024 |
| Linux | python3-aiohttp Ubuntu 22.04.1 LTS (jammy) | 3.8.1-4ubuntu0.2+esm1 | [python3-aiohttp 3.8.1-4ubuntu0.2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-aiohttp-3.8.1-4ubuntu0.2-esm1.md) | Nov 18, 2024 |
| Linux | python3-aiohttp Ubuntu 24.04.5 LTS (noble) | 3.9.1-1ubuntu0.1+esm1 | [python3-aiohttp 3.9.1-1ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-python3-aiohttp-3.9.1-1ubuntu0.1-esm1.md) | Nov 18, 2024 |

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